EEE :: D.C. Generators
- The e.m.f. generated by a shunt wound D.C. generator is E. Now while pole flux remains constant, if the speed of the generator is doubled, the e.m.f. generated will be
- In the case of lap winding resultant pitch is
- Armature reaction in a generator results in
- Which of the following statement about D.C. generators is false?
- Following D.C. generator will be in a position to build up without any residual magnetism in the poles
- The following constitute short-circuit in the armature winding.
- In a D.C. generator the actual flux distribution depends upon
- In D.C. generators, the cause of rapid brush wear may be
- In a D.C. generator the number of mechanical degrees and electrical degrees will be the same when
- In a commutator
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A.
Compensating winding in a D.C. machine helps in commutation |
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B.
In a D. C. generator interpoles winding is connected in series with the armature winding |
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C.
Back pitch and front pitch are both odd and approximately equal to the pole pitch |
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D.
Equalizing bus bars are used with parallel running of D.C. shunt generators |